Lesson 5 Fabric Filter Design Review
Lesson 5 Fabric Filter Design Review
Lesson 5 Fabric Filter Design Review
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Fabric</strong> <strong>Filter</strong> <strong>Design</strong> <strong>Review</strong><br />
<strong>Review</strong> Answers<br />
1. b. Pulse-jet<br />
Due to their high filter rates, pulse-jet baghouses take up less space than shaker and reverse-air<br />
baghouses.<br />
2. True<br />
Gas and dust stream properties influence filter choice.<br />
3. d. 10:1<br />
An appropriate “rule of thumb” ratio of filtering time to cleaning time should be at least 10:1. If<br />
the ratio is much lower, the bags would be cleaned too frequently and may wear out too quickly.<br />
4. False<br />
An air-to-cloth ratio that is too high results in higher pressure drops.<br />
5. e. a and c, only<br />
Nomex is not very resistant to HCl and SO 2 (acid gases).<br />
6. c. 78.5 ft 2<br />
Solution:<br />
1. Calculate the area of a bag (A b ).<br />
A b = πdh<br />
Given: π =3.14<br />
d = 15 in., diameter of bag<br />
h = 20 ft, height of bag<br />
A b = 3.14 × 15 in.<br />
1ft<br />
× × 20 ft<br />
12 in.<br />
= 78.5 ft 2<br />
2.0-3/95 5-13
Change language